======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '255'
                                          'artist'  "D'espairsRay"
                                     'text_people'  ''
                                         'release'  '[Coll:set]'
                                           'title'  'In Vain'
                                           'quals'  ("['Q-LOCALNESS-2', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['industrial metal', 'industrial', 'visual kei', 'japanese', 'j rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'eid-metal;loc-asia-japan'
                                             'bpm'  '84.491'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 00002992 000023C7 000091AC 00007758 0003562F 000190B6 00008C90 00008D74 '
 '00013182 0001C67D')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000870 0000000000ABFA80 00000000 003E5C15 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     '[Coll:set]'
'TBPM' (BPM (beats per minute))                     '84.491'
'TCON' (Content type, a.k.a. Genre)                 ['eid-metal', 'loc-asia-japan']
'TDRC' (Recording time)                             '2005'
'TENC' (Encoded by)                                 'iTunes v7.0.2.16'
'TIT2' (Title/songname/content description)         'In Vain'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               "D'espairsRay"
'TRCK' (Track number/Position in set)               '03'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['industrial metal', 'industrial', 'visual kei', 'japanese', 'j rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.94 dB'
'TXXX:replaygain_track_peak'                        '0.466087'

========================== row from database ==========================
                                              'id'  1530574
                                            'path'  /data/Music/Bulk/00poprockelectronic/D_espairs Ray/[Coll_set]/D_espairs Ray - 03 - In Vain.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  255
                                           'genre'  eid-metal;loc-asia-japan
                                        'filesize'  4091904
                                           'mtime'  1620301742
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic D_espairs [Coll_set] D_espairs 03 eid metal;loc asia japan
                                      'tag_artist'  D'espairsRay
                                     'tag_release'  [Coll:set]
                                       'tag_title'  In Vain
                                             'bpm'  84.491
                                    'search_title'  'in':1 'vain':2
                                   'search_artist'  'd':1,4 'despairs':6 'despairsray':3 'espairs':5 'espairsray':2 'ray':7
                                  'search_release'  'coll':1 'collset':3 'set':2
                                     'search_rest'  '00poprockelectronic':1 'asia':13 'coll':4,6 'd':2 'eid':8 'espairs':3 'japan':14 'loc':10,12 'metal':9,11 'set':5,7
                                    'search_combo'  '00poprockelectronic':13 'asia':25 'coll':10C,16,18 'collset':12C 'd':3B,6B,14 'despairs':8B 'despairsray':5B 'eid':20 'espairs':7B,15 'espairsray':4B 'in':1A 'japan':26 'loc':22,24 'metal':21,23 'ray':9B 'set':11C,17,19 'vain':2A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['industrial metal', 'industrial', 'visual kei', 'japanese', 'j rock']
                                        'tag_date'  2005
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301742.4297864  (2021-05-06 13:49:02)
                             'size'  4091904